Operating system concepts chapter 9 virtual memory

... Physical Memory ⇒ Operating System Concepts – 7th Edition, Feb 22, 2005 9. 5 Silberschatz, Galvin and Gagne ©2005 Virtual- address Space Operating System Concepts – 7th Edition, Feb 22, 2005 9. 6 Silberschatz, ... Considerations Operating- System Examples Operating System Concepts – 7th Edition, Feb 22, 2005 9. 2 Silberschatz, Galvin and Gagne ©2005 Objectives To describe the benefits of a virtual memory system ... pages Operating System Concepts – 7th Edition, Feb 22, 2005 9. 18 Silberschatz, Galvin and Gagne ©2005 Before Process Modifies Page C Operating System Concepts – 7th Edition, Feb 22, 2005 9. 19 Silberschatz,...

Operating System Concepts - Chapter 8: Main Memory doc

... and Physical Memory Operating System Concepts – 7th Edition, Feb 22, 2005 8.23 Silberschatz, Galvin and Gagne ©2005 Paging Example 32-byte memory and 4-byte pages Operating System Concepts – 7th ... technique is a two-level page table Operating System Concepts – 7th Edition, Feb 22, 2005 8.35 Silberschatz, Galvin and Gagne ©2005 Two-Level Page-Table Scheme Operating System Concepts – 7th Edition, ... are the same in compile-time and load-time address-binding schemes; logical (virtual) and physical addresses differ in execution-time address-binding scheme Operating System Concepts – 7th Edition,...

Chapter 9 Virtual memory

... Chapter 9: Virtual Memory Background Demand Paging Copy-on-Write Page Replacement Allocation of Frames Thrashing Memory- Mapped Files Allocating Kernel Memory Other Considerations ... Feb 22, 2005 9. 3 Silberschatz, Galvin and Gagne ©2005 Background Virtual memory – separation of user logical memory from physical memory Only part of the program needs to be in memory for execution ... separation between logical memory and physical memory – large virtual memory can be provided on a smaller physical memory Operating System Concepts – 7th Edition, Feb 22, 2005 9. 22 Silberschatz, Galvin...

Operating System Concepts - Chapter 1: Introduction.Chapter 1: IntroductionWhat Operating Systems Do Computer-System pot

... Chapter 1: Introduction What Operating Systems Do Computer -System Organization Computer -System Architecture Operating- System Structure Operating- System Operations Process ... system Loads operating system kernel and starts execution Operating System Concepts – 7th Edition, Jan 12, 2005 1.9 Silberschatz, Galvin and Gagne ©2005 Computer System Organization Computer -system ... servers: load balancers Use of operating systems like Windows 95, client-side, have evolved into Linux and Windows XP, which can be clients and servers Operating System Concepts – 7th Edition, Jan...

Operating System Concepts - Chapter 2: Operating-System Structures doc

... Chapter 2: Operating- System Structures Operating System Services User Operating System Interface System Calls Types of System Calls System Programs Operating System Design and ... customized and how they boot Operating System Concepts – 7th Edition, Jan 14, 2005 2.3 Silberschatz, Galvin and Gagne ©2005 Operating System Services One set of operating- system services provides ... permission management Operating System Concepts – 7th Edition, Jan 14, 2005 2.4 Silberschatz, Galvin and Gagne ©2005 Operating System Services (Cont.) One set of operating- system services provides...

Operating System Concepts - Chapter 3: Processes ppt

... Chapter 3: Processes Process Concept Process Scheduling Operations on Processes Cooperating Processes Interprocess Communication Communication in Client-Server Systems Operating System Concepts ... Complete"); exit(0); } } Operating System Concepts - 7th Edition, Feb 7, 2006 3.20 Silberschatz, Galvin and Gagne ©2005 A tree of processes on a typical Solaris Operating System Concepts - 7th Edition, ... unidirectional or bi-directional? Operating System Concepts - 7th Edition, Feb 7, 2006 3.29 Silberschatz, Galvin and Gagne ©2005 Communications Models Operating System Concepts - 7th Edition, Feb...

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Operating System Concepts - Chapter 4: Threads pot

... UNIX Mac OS X Operating System Concepts – 7th edition, Jan 23, 2005 4.6 Silberschatz, Galvin and Gagne ©2005 Multithreading Models Many-to-One One-to-One Many-to-Many Operating System Concepts – ... Chapter 4: Threads Overview Multithreading Models Threading Issues Pthreads Windows XP Threads Linux Threads Java Threads Operating System Concepts – 7th edition, Jan ... Silberschatz, Galvin and Gagne ©2005 Many-to-One Many user-level threads mapped to single kernel thread Examples: Solaris Green Threads GNU Portable Threads Operating System Concepts – 7th edition, Jan 23,...

Operating System Concepts - Chapter 5: CPU Scheduling pdf

... Chapter 5: CPU Scheduling Basic Concepts Scheduling Criteria Scheduling Algorithms Multiple-Processor Scheduling Real-Time Scheduling Thread Scheduling Operating Systems Examples ... } Operating System Concepts – 7th Edition, Feb 2, 2005 5.32 Silberschatz, Galvin and Gagne ©2005 Operating System Examples Solaris scheduling Windows XP scheduling Linux scheduling Operating System ... Alternating Sequence of CPU And I/O Bursts Operating System Concepts – 7th Edition, Feb 2, 2005 5.4 Silberschatz, Galvin and Gagne ©2005 Histogram of CPU- burst Times Operating System Concepts – 7th Edition,...

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Operating System Concepts - Chapter 6: Process Synchronization potx

... implemented as: if (x-count > 0) { next-count++; signal(x-sem); wait(next); next-count ; } Operating System Concepts – 7th Edition, Feb 8, 2005 6.40 Silberschatz, Galvin and Gagne ©2005 Synchronization ... The operation x.wait can be implemented as: x-count++; if (next-count > 0) signal(next); else signal(mutex); wait(x-sem); x-count ; Operating System Concepts – 7th Edition, Feb 8, 2005 6.39 Silberschatz, ... Module 6: Process Synchronization Background The Critical-Section Problem Peterson’s Solution Synchronization Hardware Semaphores Classic Problems of Synchronization Monitors Synchronization...

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Operating System Concepts - Chapter 7: Deadlocks pdf

... claimed a priori in the system Operating System Concepts - 7th Edition, Feb 14, 2005 7.22 Silberschatz, Galvin and Gagne ©2005 Resource-Allocation Graph Operating System Concepts - 7th Edition, Feb ... graph Operating System Concepts - 7th Edition, Feb 14, 2005 7.34 Silberschatz, Galvin and Gagne ©2005 Resource-Allocation Graph and Wait-for Graph Resource-Allocation Graph Operating System Concepts ... that a system will never enter an unsafe state Operating System Concepts - 7th Edition, Feb 14, 2005 7.19 Silberschatz, Galvin and Gagne ©2005 Safe, Unsafe , Deadlock State Operating System Concepts...

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Operating System Concepts - Chapter 12: Mass-Storage Systems doc

... Chapter 12: Mass-Storage Systems Overview of Mass Storage Structure Disk Structure Disk Attachment Disk Scheduling Disk Management Swap-Space Management RAID Structure Disk Attachment Stable-Storage ... the performance characteristics of mass-storage devices Discuss operating- system services provided for mass storage, including RAID and HSM Operating System Concepts – 7th Edition, Jan 1, 2005 ... into drive or storage array Operating System Concepts – 7th Edition, Jan 1, 2005 12.4 Silberschatz, Galvin and Gagne ©2005 Moving-head Disk Machanism Operating System Concepts – 7th Edition, Jan...

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Operating System Concepts - Chapter 13: I/O Systems pptx

... Chapter 13: I/O Systems I/O Hardware Application I/O Interface Kernel I/O Subsystem Transforming I/O Requests to Hardware Operations Streams Performance Operating System Concepts – ... of an operating system s I/O subsystem Discuss the principles of I/O hardware and its complexity Provide details of the performance aspects of I/O hardware and software Operating System Concepts ... by Direct I/O instructions Memory-mapped I/O Operating System Concepts – 7th Edition, Jan 2, 2005 13.4 Silberschatz, Galvin and Gagne ©2005 A Typical PC Bus Structure Operating System Concepts...

Operating System Concepts - Chapter 14: Protection pdf

... Structure Access-right = where rights-set is a subset of all valid operations that can be performed on the object Domain = set of access-rights Operating System Concepts – ... is unavailable Interpret protection specifications to generate calls on whatever protection system is provided by the hardware and the operating system Operating System Concepts – 7th Edition, ... Chapter 14: Protection Goals of Protection Principles of Protection Domain of Protection Access Matrix Implementation of Access Matrix Access Control Revocation of Access Rights Capability-Based...

Operating System Concepts - Chapter 15: Security pdf

... modification Man-in-the-middle attack Session hijacking Operating System Concepts – 7th Edition, Jan 10, 2005 15.5 Silberschatz, Galvin and Gagne ©2005 Standard Security Attacks Operating System Concepts ... to security attacks Operating System Concepts – 7th Edition, Jan 10, 2005 15.3 Silberschatz, Galvin and Gagne ©2005 The Security Problem Security must consider external environment of the system, ... Chapter 15: Security The Security Problem Program Threats System and Network Threats Cryptography as a Security Tool User Authentication Implementing Security Defenses Firewalling...

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